Ancillary Sword (Ann Leckie)

JUSTICE FOR ALL
Breq - the soldier who used to be a spaceship - is serving the emperor she swore to destroy. She's been given her own warship, her own crew and ordered to the only place in the galaxy she would have agreed to go: to Athoek Station, to protect the family of the lieutenant she murdered in cold blood.
Athoek was annexed by the Empire some six hundred years ago, and by now everyone is fully 'civilised'. Or should be - but everything is not as tranquil as it appears. Old divisions are still troublesome, Athoek Station's AI is restless and it looks like the alien Presger might have taken an interest in what's going on. With no guarantees that their interest is benevolent.